Behold! The X-Ray resistant panties!

I say it's the Lens of Truth. It makes visible what's invisible and invisible what is visible. In some cases. Basically, what I'm saying is that she's seemingly without panties.

or that she's wearing invisible panties

Which seems even more hilariously awesome

Magoto-sama said:

Basically, what I'm saying is that she's seemingly without panties.

No.

slave2thedrago said:

or that she's wearing invisible panties

Yes, that. The lens of truth make visible what's invisible, not visible what's inexistent.

...so, panties created with the same material as the stone mask?

Wouldn't that also mean she's not actually wearing clothes?

This is such a paradoxically fascinating article of clothing